Refrigerant gas, which air conditioners (Acs) use to cool interior areas, might run out over time as a result of leaks or general wear and tear. A frequently asked question by homeowners, particularly those who own a 1.5-ton air conditioner, is how much gas the unit needs and how to properly replace it. There are many affordable aircon gas top up price in Singapore that are reputable and won’t break your bank. This comprehensive tutorial will explain the fundamentals of refrigerant gas in your 1.5-ton air conditioner, how much is required, and how to securely refuel it.
How Much Gas is Needed for Refrigerant in a 1.5-Ton AC?
An air conditioner’s need for refrigerant gas varies based on its size and type of refrigerant. The amount of gas required for a 1.5-ton split air conditioner or window air conditioner is normally between 1.3 and 1.8 kilos for R-22, and somewhat different for R-410A or R-32.
Refrigerant levels should not be topped off at random; instead, the system must be charged with the precise amount of gas recommended by the manufacturer. Refrigerant over- or under-charging an air conditioner can result in inefficiency, poor cooling, and perhaps system damage over time and is best done by an expert like https://www.handymansingapore.net/aircon-services/.
How to Safely Add Refrigerant Gas to a 1.5-Ton Air Conditioner?
Ideally, a professional should refill refrigerant gas, but if you’re comfortable doing it yourself, here are the fundamental procedures:
- Turn the air conditioner off: Turn the air conditioner off entirely and unplug it from the power source before starting. This guarantees your security when working with the system.
- Attach the gauge to the manifold: Connect your AC system’s low-pressure service port to the manifold gauge set. The bigger one of the two copper wires that go to your AC compressor is typically where the low-pressure port is located.
- Look for any leaks: It is imperative to check for refrigerant leaks prior to refilling. Use a soapy water solution or a leak tester to find any leaks you suspect. Prior to filling it again, fix any leaks.
- Evacuate the System: To remove moisture and air from the air conditioning system, use a vacuum pump. Ensuring that there are no impurities inside the refrigerant pipes is essential because doing so could lower the system’s efficiency. Run the vacuum until the pressure gauge registers zero or about zero.
- Fit the refrigerant cylinder in place: Put the refrigerant container to the manifold gauge set once the system has been emptied. Verify the sort of refrigerant you’re using for your 1.5-ton air conditioner. Allow the gas to enter the system gradually by opening the valve on the refrigerant cylinder.
- Pay Attention to Pressure: Make sure the pressure remains within the prescribed range for your AC model by keeping a close eye on the manifold gauge while you refill. The ideal pressure varies based on the kind of refrigerant and the surrounding circumstances, but generally speaking, the low-side pressure for R-22 should be between 60 and 80 psi, and for R-410A, it can vary from 100 to 140 psi.
- Test the System: After adding the appropriate amount of refrigerant back into the system, switch the air conditioner back on and allow it to run for a short while. Verify that there are no strange noises or performance problems coming from the system and check the efficiency of the cooling system. In order to confirm that the pressure is within the ideal range, double-check the manifold gauge.
- Cut the manifold gauge off: Following testing, firmly shut off all service ports and disconnect the manifold gauge. Double-check the connections to make sure there are no leaks.

